I think when they created VW + atmacite, they looked at how much fun the atmas + abyssea content is, and decided that kind of failure will never be repeated again. Players should not have fun, enjoyable and accessible content where you can have measured progression and a good drop rate of treasures. So they decided to give us with super weak atmacite and the only way you get it at full power is to upgrade and do VW over and over, or via cruor party. They also lower the drop rate so that it is close to impossible to get it without doing it over 50-200 times, coupled with multiple useless crap in the treasure pool, and the need to have 18 people to complete the event at the higher tier. Anything and everything just to make sure that the failure that is abyssea will never be repeated ever again. And the player base will never know the word fun, enjoyable and accessible - instead they are now conditioned with grind, more grind, and another grind.